Auxiliary air-intake valve.



M. R. SCHAFFER.

AUXILIARY AIR INTAKE VALVE- APPLICATION FILED 050.20. 1911.

1,20 ,310. 7 Patented 0015.1, 1918.

mea re.

' Mmtnnv in. ascnnrrnn, or READINGQPENNSYLVA IA.

AUXILIARY AIR-INHI AK E VALVE.

Specification of Letters Patent.

.Pa'tenitediOict. .1, rare.

-applicatron filed lleceniber 20,1917. Seria1 'NoJ208,'093.

To all 'w'homit may concern Y Be it 'known that if, :Mnnrnw 2R.:Sorrmnn, a citizen :of the *United States, :residing at Reading, :int-he county -:o'f Berka State of Pennsylvania, have invented certain:new and useful Improvements in Auxiliary; Air! Intake Valves and T dohereby "declare lthe following to be a full, clear, and exact= description w of I the invention, such #as will en able others-skilled inthe art to which 'itappertains :to make anduset he:same.

This invention 'is an improvement in internal combustion engines and hasparticular reference to an auxiliary air valve therefor. l

An object of the invention is to provide a valve of simple andinexpensive "construction adapted to be mounted in the intake manifoldof a combustion engine and connected to the throttle valve rod of thecarbureter and controlled thereby to automatically regulate the volumeof an entering the intake manifold.

Another object is to provide an improved means for manually controllingthe volume of air entering the intake manifold irrespective of theautomatic control.

The inventive idea involved is capable of receiving a variety ofmechanical expressions one of which, for the purpose of illustrating theinvention is shown in the accompanying drawing, wherein Figure l is afragmentary side elevation of an internal combustion engine of aconventional type showing the invention applied thereto.

with parts removed.

In the drawing the numeral 10 indicates generally an internal combustionengine which may be of any preferred type and which has the usualcarbureter 11 connected to the cylinders thereof by means of the intakemanifold 12. The carbureter is controlled by the usual throttle valvehaving the lever 13 to which is connected the adjusting rod 14.

The auxiliary valve which comprises the essential feature of theinvention is shown in what is now believed to be its preferred formwhich comprises a casing 1 5 having one aen'd reduced and externally-.threaded .as indicated at: 16 to engage an internally threaded aopening "in the manifold .12. The outerienlarged rend of i the casing:15 is :prefera blyarecessetlkat .1 7 to provide a valve: seat 18.wliich zpartially closes the outer end of the casing and which .isprovided adjacent itsperiphery with an arcuate air inletiopening 19.Extending centrally "through the valve seat 18 and longitudinally dfthecasingiisraiboltror screw120: secured inadjusted positions by means of a.j am nut;21+engaging the inner face of the valver se'at andconcentrically nnounted upon this abolt and engaging the seat 18 withinthe recess 17 is a disk valve 22 *having an arcu-ate opening 23' adjacent its periphery adapted to register with the opening 19 when thevalve is automatically adjusted in a manner to presently appear.

It is desirable, under certain atmospheric conditions, to vary theamount of air pass ing through the opening 23 in the valve 22 and forthis purpose use is preferably made of a shutter or plate 24 engageablewith the outer surface of the valve 22 and having one end thereof curvedas indicated at 25 to conform to the curvature of the opening or slot23. The shutter is also provided with an elongated slot 26 through whichextends a screw 27 engaging the valve 22 whereby to hold the shutter inits adjusted positions. This shutter is manually adjusted toward andaway from the opening 23 so as to vary the size thereof in conformitywith the existing atmospheric conditions.

An operating lever 28 is pivoted intermediate its ends upon the bolt 20and engages the outer face of the shutter 24, the end of the leveradjacent said bolt being connected to the valve 22 by means of a pin orrivet 29 secured therein so that when the lever 28 is adjusted about itspivot the valve 22 will be rotated and the opening 23 will be adjustedinto and out of registration with the opening 19 and vary the size ofsaid opening in accordance with the amount of adjustment of said valve.In order that the valve 22 may be retained in its adjusted It isproposed to control the adjustment of the valve 22 by that of the rod 14so that when the latter is actuated-to adjust the throttle valve of thecarbureter the auxiliary air valve will likewise be adjusted. For thispurpose, use is preferably made of a supporting arm 31 having one endbent upon itself to provide a clamp 32 for receiving the rod 14 and saidarm is secured to said rodby means of a small bolt 33 having a wing nut3 l'threaded thereon and engageable with the adjacent end of the clamp32.

, The other end of the arm 31 is connected, by

a link 35 to the end of the lever 28 opposite to that secured to thevalve 22 and through this" construction it will be apparent that whenthe rod 14: is shifted the lever 28 will be swung about its pivot andautomatically adjust the disk valve 22 to regulate the amount of airpassing through the opening 19 into the casing 15 and from thence intothe intake manifold. 1

- What is claimed is a An auxiliary air intake for internal commanifoldand having its other end recessed to provide a valve seat having anopening therein, a" valve rotatably mounted 1n sald recess and engagingsaid seat and having an opening adjustable into and out of registration.with the openingin said seat a pivot on which said valve is rotatable, ashutter element engaging the outer face of said valve and having anelongated slot therein for re ceiving said pivot, said shutter elementbeing ad ustable to vary the size of the opening in said valve, andmeans also extending through said slot and engaging said shutter elementfor retaining the same in adjusted positions.

In testimony whereof, I affix my signature in the presence oftwowitnesses.

MARTIN R. SCHAFFER.

Witnesses: e i 7 Orion) W. AomiR, CHARLES R. WERNER.

iGopies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, n.0," a

